KARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Synthesis of γ-Fe2O3 Nanoparticles and Catalytic activity of Azide-Alkyne Cycloaddition Reactions17218263662ENA Praveen KumarDepartment of Chemistry, College of Natural and Computational Science, Wollega University, Nekemte-P.O.
Box: 395, Ethiopia.
Department of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea.K SudhakaraRural Development Society, R&D centre, Punjagutta, Hyderabad, India, 500082.Begari Prem KumarRural Development Society, R&D centre, Punjagutta, Hyderabad, India, 500082.A RaghavenderRural Development Society, R&D centre, Punjagutta, Hyderabad, India, 500082.S RaviRural Development Society, R&D centre, Punjagutta, Hyderabad, India, 500082.Dunkana Negussa KeniecDepartment of Chemistry, Changwon National University, Changwon 641-773, Republic of Korea.Yong-Ill LeeDepartment of Chemistry, College of Natural and Computational Science, Wollega University, Nekemte-P.O.
Box: 395, Ethiopia.Journal Article20180122Iron nanoparticles (NPs), due to their interesting properties, low cost preparation and many potential applications in ferrofluids, magneto-optical, catalysis, drug delivery systems, magnetic resonance imaging, and biology, have attracted a lot of interest during recent years. In this research, γFe2O3NPs were synthesized through simple co-precipitation method followed by thermal treatment at 300 °C for 2 hours. In our synthesis route, FeCl3 and FeCl2 were employed as precursors to synthesize γ-Fe2O3NPs. This approach is very effective and economical. The γ-Fe2O3NPs were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, scanning electron microscopy (SEM), transmission electron microscopy (TEM),and vibrating sample magnetometer (VSM). The XRD and FT-IR results indicated the formation of γ-Fe2O3NPs. The SEM and TEM images contributed to the analysis of particle size and revealed that the γ-Fe2O3 particle size of the nanopowders ranged from 11 and 13 nm. Magnetic property was measured by VSM at room temperature and hysteresis loops exhibited that the γ-Fe2O3 NPs were super-paramagnetic. The synthesized γ-Fe2O3NPs were applied in order to synthesize mono-triazoles within one molecule using azide-alkyne cycloaddition reactions. KEYWORDS: γ-Fe2O3 Nanoparticles,
γ-Fe2O3 Nanoparticles
Co-precipitation method
Characterization
Catalysis
http://www.ajnanomat.com/article_63662_b070ed29ead6440caea62a973690a333.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Understanding the Mechanism of Electrochemical Reduction of CO2 Using Cu/Cu-Based Electrodes: A Review18322466836ENPigewh AmosDepartment of Chemistry, Faculty of Physical Sciences, Modibbo Adama University of TechnologyHitler LouisDepartment of Pure and Applied Chemistry, University of Calabar, Calabar, Cross River State, Nigeria.0000-0002-0286-2865Kayode Adesina AdegokeLadoke Akintola University of Technology, Ogbomoso, Oyo State, Nigeria.Ededet Akpan EnoDepartment of Pure and Applied Chemistry, University of Calabar, Calabar, Cross River State, Nigeria.Akakuru Ozioma UdochukwuNingbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Zhejiang, China.Thomas Odey MagubDepartment of Pure and Applied Chemistry, University of Calabar, Calabar, Cross River State, Nigeria.Journal Article20180521Interestingly, copper has been identified as an ideal metal catalyst for an industrial scale electrochemical reduction of CO2 to various value-added chemicals relative to other metal catalysts reported so far. This is due to the fact that copper and copper-based materials have the potential to convert CO2 to oxygenates such as ethanol, methanol, formates etc. and hydrocarbons such as ethane, methane etc. Mechanistic details on how these products are formed on the catalyst-electrolyte interphase during the reduction process have remained relatively uncovered. This review, therefore, seeks to uncover the mechanism of electrochemical reduction of CO2 on Cu/Cu based electrodes, factors that affect catalytic activity and selectivity for these electrodes as reported in the various literature. This paper is therefore organized as follows: section 1 covers the introduction; an overview of some basic concepts in electrochemical CO2 reduction (ECR) was discussed in section 2, experimental studies were discussed in section 3, and finally the conclusion.
Copper electrode
Catalyst
Mechanism
CO2 reduction
Selectivity
http://www.ajnanomat.com/article_66836_291b6281eb0b46085790172b51c7f78f.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Interaction Parameters for CuCl2 Plus Orange G (OG) at 19.1oC Using Carbon Glassy Electrode (CGE) in KCl Aqueous Solutions22523369758ENEssamhassan G Arafa GomaaChemistry Department, Faculty of Science, Mansoura University, 35516-Mansoura, EgyptMoustafa DiabChemistry Department, Faculty of Science, Damietta University, Damietta, Egypt.Adel ElsonbatiChemistry Department, Faculty of Science, Damietta University, Damietta, Egypt.Hamed M AbulenaderChemistry Department, Faculty of Science, Mansoura University, 35516-Mansoura, EgyptAsmaa HelmyChemistry Department, Faculty of Science, Damietta University, Damietta, Egypt.Journal Article20180701The redox mechanisms were examined for copper chloride in absence and presence of Orange G (OG) at 19.1°C using Carbon glassy electrode (CGE). The supporting electrolyte used is 0.1 M KCl effect of scan rate was also studies for the redox reactions for CuCl2 alone and in presence of the ligand used orange G (OG). Stability constants for the complex formed from the interaction of CuCl2+ Orange G (OG) were evaluated with the different thermo chemical data. Effect of different scan rates were examined for cupric Chloride in absence and presence of the ligand used Orange G (OG).The different scans used are 0.1, 0.05, 0.02 and 0.01 V/Sec. The stability constants and Gibbs free energies of complexation were also estimated for the interaction of CuCl2 with Orange G (OG) in 0.1MKCl supporting electrolyte.
Solvation parameters
Cyclic Voltammetry
copper chloride
orange G (OG)
glassy carbon electrode (CGE)
http://www.ajnanomat.com/article_69758_e98833c0e385ccea5814f20539ef6605.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Theoretical insights of the electronic structures, conductivity, and aromaticiy of Graphyne and Si-doped Graphynes23424369771ENReza GhiasiDepartment of Chemistry, East Tehran Branch, Islamic Azad University, Qiam Dasht, Tehran, IRANFaegheh Aghazadeh Kozeh KananiDepartment of Chemistry, Science and Research Branch, Islamic Azad University, Tehran, IRANJournal Article20180709In the present research, the dipole moment, electronic structure, frontier orbitals energy, and aromaticity in the graphyne and Si-doped graphynes were studied with M062X quantum chemical computation. The relative energies of four possible isomers of Si-doped graphyne were calculated. Also, the ionization potential (IP) and electron affinity (EA) values of the studied molecules were reported. Frontier orbital (HOMO-LUMO) gap values were used for illustration of conductivity of these molecules. Aromaticity of the cycles of studied molecules was investigated by nucleus independent chemical shift (NICS) values and electron localization function (ELF).
Graphyne
Si-doped Graphyne
Nucleus independent chemical shift (NICS)
electron localization function (ELF)
http://www.ajnanomat.com/article_69771_2a00040da5311671a163209d8af41273.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Promising anti-inflammatory bio-efficacy of saponin loaded silver nanoparticles prepared from the plant Madhuca longifolia24426169788ENMukti SharmaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Agra, 282005, India.Saurabh YadavDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Agra, 282005, India.Man SrivastavaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Agra, 282005, India.Narayanan GaneshJawaharlal Nehru Cancer Hospital & Research Centre, Bhopal, 462001, India.Shalini SrivastavaDepartment of Chemistry, Faculty of Science, Dayalbagh Educational Institute, Agra, 282005, India.Journal Article20180702Phyto-compounds facilitated synthesis of nanoparticles has created an exceptional impact in the formation of nanoparticles and is used for the synthesis of modern nano drugs. Ignorance about phytochemical composition particularly knowledge of the bio-active principle of medicinal plant restricts the demonstration of the real picture of the enhancement of any bio-efficacy. The present communication scientifically established anti-inflammatory bio-efficacy in seeds of the folk plant <em>Madhuca longifolia</em> and its significant enhancement by bio-active principle (saponin) loaded silver nanoparticles (S@AgNp<sub>s</sub>). A family of four saponins has been explored quantified (3.59%) and characterized (Micro Mass ESI-TOF MS spectra). Synthesis of S@AgNp<sub>s</sub> has been conducted in a green single step and thoroughly characterized. <em>In- vivo</em> assessment of anti-inflammatory bio-efficacy has been carried out using carrageenan induced hind paw edema in <em>Swiss albino</em> mice model. Anti-inflammation bio-efficacy of native seed extract (15 mg/kg/bw) was found 46.84% which was further elevated and further rose to 56.10% by saponin at considerable low optimized dose (1.5 mg/kg/bw). Anti-inflammatory bio-efficacy was further successfully enhanced to (70.99%) by S@AgNp<sub>s</sub>, almost close to that of reference drug (Diclofenac sodium; 76.42%). Saponin loaded silver nanoparticles (S@AgNp<sub>s</sub>) prepared from the seed extract of the plant <em>M. longifolia </em>seem to be an ideal candidate for the development of complimentary herbal nanomedicine for anti-inflammation.
Madhuca longifolia
Green synthesis
Saponin loaded silver nanoparticles Enhanced anti-inflammatory activity
http://www.ajnanomat.com/article_69788_d92dcc6fef92c7afd3b5580ad13e9060.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001A Quantum, NBO, RDG study the interaction of cadmium ion with the pristine, C, P and C&P doped (4,4) armchair boron nitride nanotube (BNNTs)26227069790ENMahdi Rezaei SametiDepartment of Applied Chemistry, Faculty of Science, Malayer University, Malayer, 65174, IranB. AmirianDepartment of Applied Chemistry, Faculty of Science, Malayer University, Malayer, 65174, IranJournal Article20180601In this paper, by using of density function theory (DFT), we have investigated the interaction and adsorption of Cd+2 ion on the interior and exterior surface of pristine, C, P and C&P doped BNNTs. The calculated results indicate that the adsorption of Cd+2 is exothermic in thermodynamic approach. With adsorbing Cd+2 ion the electrical and optical properties of system alter significantly from original state. Inspection of quantum, natural bond orbital (NBO) and reduced density gradient (RDG) results confirm that the pristine and doped BNNTs are a good candidate to making sensor and adsorbent of Cd+2 in biological and environmental system.
BNNTs
Adsorption Cd+2
DFT
RDG
http://www.ajnanomat.com/article_69790_0ea20aab00814ea16dbbb10486d15303.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Removal of Pb (II) from aqueous solution by gel combustion of a new nano sized Co3O4/ZnO composite27128169363ENIran SheikhshoaieDepartment of Chemistry, Shahid Bahonar University of Kerman, Kerman, 76175, Iran0000-0002-2450-7493Azimeh RezazadehDepartment of Chemistry, Shahid Bahonar University of Kerman, Kerman, 76175, Iran
Young Research Society, Shahid Bahonar University of Kerman, Kerman, Iran.Samaneh RamezanpourDepartment of Chemistry, Shahid Bahonar University of Kerman, Kerman, 76175, Iran
Young Research Society, Shahid Bahonar University of Kerman, Kerman, Iran.Journal Article20180410Nano Co3O4/ZnO has been successfully synthesized by a simple and green gel combustion method followed by calcination at 600 o C. Sugar was used as fuel for combustion in this work. The nano Co3O4–ZnO was characterized by X-ray diffraction (XRD), Energy Dispersive X-Ray analysis (EDAX) and Scanning electron microscopy (SEM). Co3O4–ZnO was applied as an adsorbent to remove lead from aqueous solution.EDAX strongly proved the adsorption of lead on the surface of Co3O4-ZnO adsorbent. By increasing the amount of ZnO on the structure of the Co3O4-ZnO samples, the adsorption of Pb2+ on the surface was increased too. The SEM images also help the confirmation of lead adsorption on the surface of as synthesized samples. The concentrations of remained Pb2+ ions were also measured by atomic absorption spectroscopy (AAS) and reported in terms of removal efficiency.
Gel combustion
Adsorption
Lead removal
Nanosized Co3O4/ZnO
http://www.ajnanomat.com/article_69363_c386fbf81be5773f9e9f23de6c77a743.pdfKARE, İstanbul- TurkeyAsian Journal of Nanosciences and Materials1Issue 4. pp. 172-29320181001Thermodynamic data (Voltammetrically) Estimated for the Interaction of Nano Cadmium Chloride (Ncc) with Isatin Using Glassy Carbon Electrode28229369911ENMohamed A MorsiChemistry Department, Faculty of Science, Mansoura University, 35516- Mansoura, EgyptEssam hassan GomaaChemistry Department, Faculty of Science, Mansoura University, 35516- Mansoura, EgyptAlaa S NageebChemistry Department, Faculty of Science, Mansoura University, 35516- Mansoura, EgyptJournal Article20180711The redox behavior for nano cadmium chloride (Ncc) was studied using cyclic voltammetry in the absence and presence of isatin (Isa.) on the use carbon glassy electrode (CGE) prepared in laboratory in 0.1M KCl electrolytic solution at two different temperatures . All cyclic voltamograms were carried at the selected temperatures in the absence and presence of isatin (Isa.). The redox reactions and reaction mechanism were suggested. All avialable cyclic voltammetry and thermodynamic data were calculated from cyclic voltammetry measurments and their values were explained .All the thermodynamic parameters necessary for the interaction of nano CdCl2 withisatin were calculate,explained and interapretatited.
Cyclic Voltammetry
thermodynamic parameters
nano cadmium chloride (Ncc)
Isatin (Isa)
http://www.ajnanomat.com/article_69911_d5d8718d93b9632882c8debfbf682031.pdf